Reading Comprehension #14018

Practice Exercise 13 A

Context Clues

  1. Read the paragraph. Use context clues to write a general definition for each underlined word. Use a dictionary to write an exact definition.

    Fossil fuels are often used as energy sources for generating electricity. However, the burning of these fuels contribute to air pollution. Coal has a high sulphur content. The sulphur is not burned completely during combustion of the coal and is released into the air as sulphur oxide. Coal is high in sulphur because the ancient plants and animals that were compressed to form coal contained sulphur in their tissues. Oil and tar release many of the same pollutants as coal when the energy and byproducts are produced during the burning process. Pollution from this source could be reduced by burning these compressed and chemically altered plants and animals at higher temperatures, installation of chemical scrubbers to remove harmful pollutants, or a decreased use of fossil fuels.

    Adapted from the “Intermediate Academic Upgrading-Science” learning packages; IA U-S 4.2
  1. combustion

    1. General definition —

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    2. Specific definition —

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  2. Fossil fuels

    1. General definition —

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    2. Specific definition —

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Adult Basic Education